On Tue, Dec 1, 2020 at 1:59 PM Roman Gushchin <guro@xxxxxx> wrote: > > 5) Cryptic -EPERM is returned on exceeding the limit. Libbpf even had > a function to "explain" this case for users. ... > v9: > - always charge the saved memory cgroup, by Daniel, Toke and Alexei > - added bpf_map_kzalloc() > - rebase and minor fixes This looks great. Applied. Please follow up with a change to libbpf's pr_perm_msg(). That helpful warning should stay for old kernels, but it would be misleading for new kernels. libbpf probably needs a feature check to make this warning conditional. Thanks!